Straight Rod Passing Through Curved Hole This was at the Science Museum in Valencia, Spain. An intriguing rod passing through a curved hole. Facebook Prev Article Next Article Videos Checkout these cool gadgets... Related Posts How Holograms are Made How Dyson Tests Their Vacuums Marble Machine – music instrument The Internet in the Next 60 Seconds World Record Dominoes – Over 1 Million 7 Special Effects That Anyone Can Do For Free